diff --git a/manifests/init.pp b/manifests/init.pp
index bb078a0..83fdee7 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -16,8 +16,18 @@
 #   String with Database password.
 #
 # [*mastodon_version*]
-#   String with Mastodon version (code tag) to install. Default v4.2.1
+#   String with Mastodon version (code tag) to install. Default: v4.2.1
 #
+# [*mastodon_user*]
+#   String with the system user name for mastodon. Default: mastodon
+#
+# [*mastodon_group*]
+#   String with the system group name for mastodon. Default: mastodon
+#
+# [*ruby_version*]
+#   String with the ruby version to use. Default: 3.2.2
+#
+
 class mastodon (
   String $ensure = 'present',
   String $hostname = 'mastodon.example.org',
@@ -25,6 +35,9 @@ class mastodon (
   String $mastodon_home = '/opt/mastodon',
   String $db_password = '',
   String $mastodon_version = 'v4.2.1',
+  String $ruby_version = '3.2.2',
+  String $mastodon_user = 'mastodon',
+  String $mastodon_group = 'mastodon',
 ) {
   case $ensure {
     default: {
@@ -106,32 +119,32 @@ class mastodon (
     creates => '/root/.yarnrc',
     require => Exec['enable_corepack'],
   }
-  group { 'mastodon': }
-  user { 'mastodon':
-    gid        => 'mastodon',
+  group { $mastodon_group: }
+  user { $mastodon_user:
+    gid        => $mastodon_group,
     home       => $mastodon_home,
     managehome => true,
     system     => true,
-    require    => Group['mastodon'],
+    require    => Group[$mastodon_group],
   }
   vcsrepo { 'rbenv':
     path     => "${mastodon_home}/.rbenv",
     source   => 'https://github.com/rbenv/rbenv.git',
     provider => 'git',
-    owner    => 'mastodon',
-    group    => 'mastodon',
-    require  => User['mastodon'],
+    owner    => $mastodon_user,
+    group    => $mastodon_group,
+    require  => User[$mastodon_user],
   }
   exec { 'configure_rbenv':
     command => "${mastodon_home}/.rbenv/src/configure",
-    user    => 'mastodon',
+    user    => $mastodon_user,
     cwd     => "${mastodon_home}/.rbenv/",
     creates => "${mastodon_home}/.rbenv/src/Makefile",
     require => Vcsrepo['rbenv'],
   }
   exec { 'make_rbenv':
     command => '/usr/bin/make -C src',
-    user    => 'mastodon',
+    user    => $mastodon_user,
     cwd     => "${mastodon_home}/.rbenv/",
     creates => "${mastodon_home}/.rbenv/libexec/rbenv-realpath.dylib",
     require => Exec['configure_rbenv'],
@@ -152,35 +165,35 @@ class mastodon (
     path     => "${mastodon_home}/.rbenv/plugins/ruby-build",
     source   => 'https://github.com/rbenv/ruby-build.git',
     provider => 'git',
-    owner    => 'mastodon',
-    group    => 'mastodon',
+    owner    => $mastodon_user,
+    group    => $mastodon_group,
     require  => Vcsrepo['rbenv'],
   }
   file { '/usr/local/bin/install_ruby.sh':
     ensure  => $ensure,
     content => template('mastodon/install_ruby.sh.erb'),
     mode    => '0750',
-    owner   => 'mastodon',
+    owner   => $mastodon_user,
     group   => 'root',
     require => Vcsrepo['ruby_build'],
   }
   exec { 'install_ruby':
     command => '/usr/local/bin/install_ruby.sh',
-    user    => 'mastodon',
+    user    => $mastodon_user,
     cwd     => "${mastodon_home}/.rbenv/",
     creates => "${mastodon_home}/.rbenv/versions/3.2.2/bin/ruby",
     require => File['/usr/local/bin/install_ruby.sh'],
   }
   # exec { 'set_global_ruby_version':
   #   command     => "${mastodon_home}/.rbenv/libexec/rbenv global 3.2.2",
-  #   user        => 'mastodon',
+  #   user        => $mastodon_user,
   #   cwd         => "${mastodon_home}/.rbenv/",
   #   # creates     => '',
   #   require     => Exec['install_ruby'],
   # }
   # exec { 'install_bundler':
   #   command   => 'gem install bundler --no-document',
-  #   user      => 'mastodon',
+  #   user      => $mastodon_user,
   #   cwd       => "${mastodon_home}/.rbenv/",
   #   # creates => '',
   #   require   => Vcsrepo['ruby_build'],
@@ -194,20 +207,20 @@ class mastodon (
     source   => 'https://github.com/mastodon/mastodon.git',
     revision => $mastodon_version,
     provider => 'git',
-    owner    => 'mastodon',
-    group    => 'mastodon',
-    require  => User['mastodon'],
+    owner    => $mastodon_user,
+    group    => $mastodon_group,
+    require  => User[$mastodon_user],
   }
   # exec { 'config_deployment':
   #   command => 'bundle config deployment \'true\'',
-  #   user    => 'mastodon',
+  #   user    => $mastodon_user,
   #   cwd     => "${mastodon_home}/live",
   #   # creates => "${mastodon_home}/.rbenv/libexec/rbenv-realpath.dylib",
   #   require => Rvm_gemset['bundler'],
   # }
   # exec { 'config_without_devel_test':
   #   command => 'bundle config without \'development test\'',
-  #   user    => 'mastodon',
+  #   user    => $mastodon_user,
   #   cwd     => "${mastodon_home}/live",
   #   # creates => "${mastodon_home}/.rbenv/libexec/rbenv-realpath.dylib",
   #   require => Exec['config_deployment'],
@@ -215,7 +228,7 @@ class mastodon (
   # exec { 'bundle_install':
   #   command => 'bundle install -j$(getconf _NPROCESSORS_ONLN)',
   #   path    => '/usr/sbin:/usr/bin:/sbin:/bin',
-  #   user    => 'mastodon',
+  #   user    => $mastodon_user',
   #   cwd     => "${mastodon_home}/live",
   #   # creates => "${mastodon_home}/.rbenv/libexec/rbenv-realpath.dylib",
   #   require => Exec['config_without_devel_test'],
@@ -223,7 +236,7 @@ class mastodon (
   # exec { 'yarn_install':
   #   command => 'yarn install --pure-lockfile',
   #   path    => '/usr/sbin:/usr/bin:/sbin:/bin',
-  #   user    => 'mastodon',
+  #   user    => $mastodon_user,
   #   cwd     => "${mastodon_home}/live",
   #   # creates => "${mastodon_home}/.rbenv/libexec/rbenv-realpath.dylib",
   #   require => Exec['bundle_install'],
diff --git a/templates/install_ruby.sh.erb b/templates/install_ruby.sh.erb
index 2502875..13d611d 100644
--- a/templates/install_ruby.sh.erb
+++ b/templates/install_ruby.sh.erb
@@ -1,8 +1,8 @@
 #!/bin/bash
 set -euo pipefail
 
-su mastodon
-if [ ! -e "<%= @mastodon_home %>/.rbenv/versions/3.2.2/bin/ruby" ]; then
-    cd "<%= @mastodon_home %>"
-    RUBY_CONFIGURE_OPTS=--with-jemalloc "<%= @mastodon_home %>/.rbenv/bin/rbenv" install 3.2.2
+su '<%= @mastodon_user %>'
+if [ ! -e '<%= @mastodon_home %>/.rbenv/versions/<%= @ruby_version %>/bin/ruby' ]; then
+    cd '<%= @mastodon_home %>'
+    RUBY_CONFIGURE_OPTS=--with-jemalloc '<%= @mastodon_home %>/.rbenv/bin/rbenv' install '<%= @ruby_version %>'
 fi